• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Sensors Models in Remote Sensing Photogrammetry >INVISTIGATION ON CANOPY HEIGHT AND DENSITY DIFFERENTIATIONS IN THE MANAGED AND UNMANAGED FOREST STANDS USING LIDAR DATA (CASE STUDY: SHASTKALATEH FOREST, GORGAN)
【24h】

INVISTIGATION ON CANOPY HEIGHT AND DENSITY DIFFERENTIATIONS IN THE MANAGED AND UNMANAGED FOREST STANDS USING LIDAR DATA (CASE STUDY: SHASTKALATEH FOREST, GORGAN)

机译：使用LIDAR数据调查管理和非托管林部的副高度和密度不同（案例研究：沙拉斯森林，戈尔根）

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Forest management plans are interesting to keep the forest stand natural composite and structure after silvicultural and management treatments. In order to investigate on stand differences made by management treatments, comparing of these stands with unmanaged stands as natural forests is necessary. Aerial laser scanners are providing suitable 3D information to map the horizontal and vertical characteristics of forest structures. In this study, different of canopy height and canopy cover variances between managed and unmanaged forest stands as well as in two dominant forest types were investigated using Lidar data in Dr. Bahramnia forest, Northern Iran. The in-situ information was gathered from 308 circular plots by a random systematic sampling designs. The low lidar cloud point data were used to generate accurate DEM and DSM models and plot-based height statistics metrics and canopy cover characteristics. The significant analyses were done by independent T-test between two stands in same dominant forest types. Results showed that there are no significant differences between canopy cover mean in two stands as well as forest types. Result of statistically analysis on height characteristics showed that there are a decreasing the forest height and its variance in the managed forest compared to unmanaged stands. In addition, there is a significant difference between maximum, range, and mean heights of two stands in 99 percent confidence level. However, there is no significant difference between standard deviation and canopy height variance of managed and unmanged stands. These results showd that accomplished management treatments and cuttings could lead to reducing of height variances and converting multi-layers stands to two or single layers. Results are also showed that the canopy cover densities in the managed forest stands are changing from high dense cover to dense cover.
机译：森林管理计划在造林系统和管理治疗后保持森林立场天然复合材料和结构是有趣的。为了调查通过管理治疗所取得的支架差异，需要与非托管代表作为天然森林的展台的比较。空中激光扫描仪提供合适的3D信息来映射森林结构的水平和垂直特性。在这项研究中，使用LIDAR数据在伊朗博士中使用LIDAR数据来研究管理和非囚犯之间的不同冠层高度和冠层覆盖差异以及两个主要森林类型。原位信息由随机系统采样设计从308个圆形图中收集。 LIDAR云点数据用于生成准确的DEM和DSM模型和基于绘图的高度统计指标和冠层覆盖特性。通过同一主导森林类型的两个站点之间的独立T检验完成显着分析。结果表明，两个代表和森林类型的顶篷掩护之间没有显着差异。统计学分析高度特征的结果表明，与非托管立场相比，森林高度及其在管理森林中的差异降低。此外，在99％的置信水平上，两个展台的最大范围和平均高度之间存在显着差异。然而，管理和不融合的标准偏差和冠层高度方差没有显着差异。这些结果显示，完成的管理处理和切割可能导致高度方差减少，并将多层转换为两个或单层。结果也表明，受管森林站立的冠层覆盖密度从高密度盖更换为密集盖。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号